{"id":5572,"date":"2023-07-04T10:40:49","date_gmt":"2023-07-04T02:40:49","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=5572"},"modified":"2023-07-04T10:40:52","modified_gmt":"2023-07-04T02:40:52","slug":"xxlxdrlzmjs","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/5572.html","title":{"rendered":"\u4fe1\u606f\u8bba\u4fe1\u9053\u5bb9\u91cf\u600e\u4e48\u8ba1\u7b97?"},"content":{"rendered":"\n

\u3000\u3000\u4fe1\u606f\u8bba\u662f\u4e00\u95e8\u7814\u7a76\u4fe1\u606f\u4f20\u8f93\u7684\u5b66\u79d1\uff0c\u5176\u4e2d\u4fe1\u9053\u5bb9\u91cf<\/strong>\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4ec0\u4e48\u662f\u4fe1\u606f\u8bba\u4fe1\u9053\u5bb9\u91cf\uff0c\u4ee5\u53ca\u5982\u4f55\u8ba1\u7b97\u5b83\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001\u4ec0\u4e48\u662f\u4fe1\u606f\u8bba\u4fe1\u9053\u5bb9\u91cf?<\/h2>\n\n\n\n

\u3000\u3000\u5728\u4fe1\u606f\u4f20\u8f93\u4e2d\uff0c\u4fe1\u9053\u662f\u4fe1\u606f\u4ece\u53d1\u9001\u65b9\u5230\u63a5\u6536\u65b9\u7684\u4f20\u8f93\u901a\u9053\u3002\u4fe1\u9053\u5bb9\u91cf\u662f\u6307\u5728\u7ed9\u5b9a\u7684\u4fe1\u566a\u6bd4\u4e0b\uff0c\u4ece\u53d1\u9001\u65b9\u5230\u63a5\u6536\u65b9\u4f20\u8f93\u7684\u6700\u5927\u4fe1\u606f\u91cf\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u4fe1\u9053\u5bb9\u91cf\u662f\u4e00\u4e2a\u4fe1\u9053\u80fd\u591f\u4f20\u8f93\u7684\u6700\u5927\u6570\u636e\u7387\u3002<\/p>\n\n\n\n

\u3000\u3000\u4fe1\u9053\u5bb9\u91cf\u7684\u8ba1\u7b97\u9700\u8981\u8003\u8651\u4fe1\u9053\u7684\u5e26\u5bbd\u3001\u4fe1\u566a\u6bd4\u3001\u566a\u58f0\u7b49\u56e0\u7d20\u3002\u4fe1\u9053\u5e26\u5bbd\u662f\u6307\u4fe1\u53f7\u80fd\u591f\u901a\u8fc7\u7684\u9891\u7387\u8303\u56f4\uff0c\u4fe1\u566a\u6bd4\u662f\u6307\u4fe1\u53f7\u548c\u566a\u58f0\u7684\u6bd4\u503c\u3002\u566a\u58f0\u662f\u6307\u4fe1\u53f7\u4e2d\u4e0d\u5e0c\u671b\u7684\u968f\u673a\u6210\u5206\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e8c\u3001\u5982\u4f55\u8ba1\u7b97\u4fe1\u606f\u8bba\u4fe1\u9053\u5bb9\u91cf?<\/h2>\n\n\n\n

\u3000\u3000\u8ba1\u7b97\u4fe1\u606f\u8bba\u4fe1\u9053\u5bb9\u91cf\u9700\u8981\u4f7f\u7528\u9999\u519c\u5b9a\u7406\u3002\u9999\u519c\u5b9a\u7406\u662f\u6307\u5728\u7ed9\u5b9a\u7684\u4fe1\u9053\u5e26\u5bbd\u548c\u4fe1\u566a\u6bd4\u6761\u4ef6\u4e0b\uff0c\u4fe1\u9053\u7684\u6700\u5927\u6570\u636e\u4f20\u8f93\u7387\u3002<\/p>\n\n\n\n

\u3000\u3000\u9999\u519c\u5b9a\u7406\u7684\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n

\u3000\u3000C = B * log2(1 + S\/N)<\/strong><\/p>\n\n\n\n

\u3000\u3000\u5176\u4e2d\uff0cC\u8868\u793a\u4fe1\u9053\u5bb9\u91cf\uff0cB\u8868\u793a\u4fe1\u9053\u5e26\u5bbd\uff0cS\u8868\u793a\u4fe1\u53f7\u529f\u7387\uff0cN\u8868\u793a\u566a\u58f0\u529f\u7387\u3002log2\u8868\u793a\u4ee52\u4e3a\u5e95\u7684\u5bf9\u6570\u3002<\/strong><\/p>\n\n\n\n

\u3000\u3000\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4fe1\u9053\u5bb9\u91cf\u7684\u5355\u4f4d\u662f\u6bd4\u7279\u6bcf\u79d2(bps)\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e09\u3001\u4fe1\u9053\u5bb9\u91cf\u7684\u5e94\u7528<\/h2>\n\n\n\n

\u3000\u3000\u4fe1\u9053\u5bb9\u91cf\u662f\u4fe1\u606f\u4f20\u8f93\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u8bc4\u4f30\u4fe1\u9053\u7684\u8d28\u91cf\u548c\u4f20\u8f93\u901f\u7387\u3002\u5728\u901a\u4fe1\u7cfb\u7edf\u8bbe\u8ba1\u4e2d\uff0c\u4fe1\u9053\u5bb9\u91cf\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u8003\u8651\u56e0\u7d20\u3002\u5982\u679c\u4fe1\u9053\u5bb9\u91cf\u4e0d\u8db3\uff0c\u4f20\u8f93\u901f\u7387\u5c31\u4f1a\u53d7\u5230\u9650\u5236\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4fe1\u606f\u4f20\u8f93\u8d28\u91cf\u4e0b\u964d\u3002<\/p>\n\n\n\n

\u3000\u3000\u540c\u65f6\uff0c\u5728\u4fe1\u606f\u7f16\u7801\u4e2d\uff0c\u4fe1\u9053\u5bb9\u91cf\u4e5f\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\u3002\u7f16\u7801\u53ef\u4ee5\u63d0\u9ad8\u4fe1\u9053\u5bb9\u91cf\uff0c\u4ece\u800c\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u8d28\u91cf\u3002\u4f8b\u5982\uff0c\u8c03\u5236\u6280\u672f\u53ef\u4ee5\u5c06\u6570\u5b57\u4fe1\u53f7\u8f6c\u6362\u4e3a\u6a21\u62df\u4fe1\u53f7\uff0c\u4ece\u800c\u6269\u5c55\u4fe1\u9053\u5e26\u5bbd\uff0c\u63d0\u9ad8\u4fe1\u9053\u5bb9\u91cf\u3002<\/p>\n\n\n\n

\u3000\u3000\u56db\u3001\u603b\u7ed3<\/p>\n\n\n\n

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